Mapannao LakeMapannao Lake is a Registered Property, Province of Cagayan located at Piat, Cagayan, Region II.
Mapannao Lake is a natural lake located in Sto. Domingo, Piat, Province of Cagayan with an altitude of 40m, the shore length is 10km with an average discharge of .29m3 /sec. The estimate terrain elevation above sea level is 39 meters. It is nearby to Mabbayugan and Sto. Domingo.